<!--MSG: 系统维护中，请稍后再试。-->
<!--ERN: Er502-->
<!doctype html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Out of service</title>
    <style type="text/css">
        html, body {
            background : #036;
            color  : #eee;
            width  : 100%;
            height : 100%;
            margin : 0;
            padding: 0;
        }
        .context {
            width  : 100%;
            height : 100%;
            display: flex;
            text-align : center;
            align-items: center;     /* 垂直居中 */
            justify-content: center; /* 水平居中 */
        }
        .content {
            font-size  : 3em ;
            font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
        }
    </style>
</head>
<body>
    <div class="context">
        <div class="content">
            <p><b>系统维护中，请稍后再试。</b></p>
            <p><b>System maintaining, please try again later.</b></p>
        </div>
    </div>
</body>
</html>